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minid

Build Status

minid is Dockerfile minifier for reducing the number of layers.

Features

  • concatenate RUN command
  • concatenate ENV command
  • concatenate LABEL command
  • concatenate COPY, ADD command
  • ...

Installation

go get -u github.com/orisano/minid

How to use

$ cat Dockerfile # 8 layers
FROM golang:1.10-alpine3.8 AS build

ENV DEP_VERSION 0.4.1

WORKDIR /go/src/github.com/orisano/gobase

RUN apk add --no-cache git make mailcap tzdata
RUN wget -O /usr/local/bin/dep https://github.com/golang/dep/releases/download/v${DEP_VERSION}/dep-linux-amd64 && chmod +x /usr/local/bin/dep
RUN wget -O /usr/local/bin/depinst https://github.com/orisano/depinst/releases/download/1.0.1/depinst-linux-amd64 && chmod +x /usr/local/bin/depinst

COPY Gopkg.lock Gopkg.toml ./
RUN dep ensure -vendor-only

ENV CGO_ENABLED=0
ENV GO_LDFLAGS="-extldflags='-static'"
RUN go build -i ./vendor/...

COPY . .
RUN make build
$ minid # 6 layers
FROM golang:1.10-alpine3.8 AS build
ENV DEP_VERSION=0.4.1
WORKDIR /go/src/github.com/orisano/gobase
RUN apk add --no-cache git make mailcap tzdata && wget -O /usr/local/bin/dep https://github.com/golang/dep/releases/download/v${DEP_VERSION}/dep-linux-amd64 && chmod +x /usr/local/bin/dep && wget -O /usr/local/bin/depinst https://github.com/orisano/depinst/releases/download/1.0.1/depinst-linux-amd64 && chmod +x /usr/local/bin/depinst
COPY Gopkg.lock Gopkg.toml ./
RUN dep ensure -vendor-only
ENV CGO_ENABLED=0 GO_LDFLAGS="-extldflags='-static'"
RUN go build -i ./vendor/...
COPY . .
RUN make build
$ minid | docker build -f - .

or

$ minid build .

Author

Nao Yonashiro (@orisano)

License

MIT

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minid is Dockerfile minifier for reducing the number of layers.

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